论文标题
断开的新兴知识图导向归纳链路预测
Disconnected Emerging Knowledge Graph Oriented Inductive Link Prediction
论文作者
论文摘要
归纳链路预测（ILP）是考虑到新兴知识图（kgs）中未见实体的联系，考虑到KGS的发展性质。一个更具挑战性的场景是，新兴的kg仅由看不见的实体组成，被称为已脱节的新兴kgs（dekgs）。 DEKGS的现有研究仅专注于预测封闭链接，即预测新兴KG内部的联系。到目前为止，先前的工作尚未调查桥接链接，这些链接将来自原始kg的进化信息从原始公斤到DEKG。为了填补空白，我们提出了一个名为DEKG-ILP的新型模型（由以下两个组件组成的dekg-ilp（断开新兴知识图形的归纳链路预测）。 （1）模块CLRM（基于对比度的关系特异性特征建模）是为了提取基于全球关系的语义特征而开发的，这些特征在原始KGS和DEKGS之间以新颖的采样策略共享。 （2）提出了模块GSM（基于GNN的子图建模），以提取围绕KGS中每个链接的局部子图拓扑信息。在几个基准数据集上进行的广泛实验表明，与最新方法相比，DEKG-ILP具有明显的性能改进，用于封闭和桥接链路预测。源代码可在线提供。
Inductive link prediction (ILP) is to predict links for unseen entities in emerging knowledge graphs (KGs), considering the evolving nature of KGs. A more challenging scenario is that emerging KGs consist of only unseen entities, called as disconnected emerging KGs (DEKGs). Existing studies for DEKGs only focus on predicting enclosing links, i.e., predicting links inside the emerging KG. The bridging links, which carry the evolutionary information from the original KG to DEKG, have not been investigated by previous work so far. To fill in the gap, we propose a novel model entitled DEKG-ILP (Disconnected Emerging Knowledge Graph Oriented Inductive Link Prediction) that consists of the following two components. (1) The module CLRM (Contrastive Learning-based Relation-specific Feature Modeling) is developed to extract global relation-based semantic features that are shared between original KGs and DEKGs with a novel sampling strategy. (2) The module GSM (GNN-based Subgraph Modeling) is proposed to extract the local subgraph topological information around each link in KGs. The extensive experiments conducted on several benchmark datasets demonstrate that DEKG-ILP has obvious performance improvements compared with state-of-the-art methods for both enclosing and bridging link prediction. The source code is available online.
